AMS2026

Features:

` 110m Typ. (5V Input) High Side MOSFET Switch
` Short Circuit Protection
` Overcurrent Protection
` Thermal Protection
` Enable Input Compatible With 3V and 5V Logic
` Controlled Rise and Fall Times Limit Current Surges and Minimize EMI
` Undervoltage Lock-Out Guarantees the Switch is Off At Start-up
` 100 A Maximum On-State Supply Current
` Available Active-High or Active-Low Enable
` Available in Space Saving 8 lead SOIC and 8 lead PDIP




Application

· USB Power Management
· Hot Plug-In Power Supplies
· Battery-Charger Circuits




Pinout






Specifications

Input Voltage Range, V_I -0.3V to 7V
Output Voltage Range, V_O -0.3V to VI(IN) +0.3V
Input Voltage Range, V_I at /EN -0.3V to 7V
Continuos Output Current, I_O Internally Limited
Internal Power Dissipation (Note 3)
Maximum Junction Temperature +125°C
Storage Temperature -65°C to +150°C
Lead Temperature (Soldering 10 sec) 260°C




Description

The AMS2026 is a dual power distribution switch intended for applications where heavy capacitive loads and short-circuitsare likely to be encountered. The high-side switch is a 110mW N-channel MOSFET. The switch is controlled by a logic enable input compatible with 3V and 5V logic and is available in active-high or active-low enable. The internal charge pump, designed to control the power switch rise and fall time to minimize current surges during switching, also provides the gate drive. Requiring no external components the charge pump allows operation from supplies as low as 3.3V. When an overload or a short circuit is encountered the AMS2026 limits the output current to a safe level by switching into a constant-current mode and the overcurrent logic output error flag is set to a low. Continuous heavy overloads and short circuits will increase the power dissipation in the switch; this will cause the junction temperature to rise. The thermal protection circuit shuts the power switch off to prevent damage. Once the device has cooled sufficiently, it will turn on automatic. An under voltage lock-out is provided to insure that the power switch is in the Off state at start-up.

The AMS2026 is offered in the 8 lead SOIC package and the 8 lead PDIP package.